/* ── Reset & Variables ─────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;
  --max-width: 1080px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
  --bg: #ffffff;
  --bg-subtle: #f6f8fa;
  --bg-card: #ffffff;
  --text: #1f2328;
  --text-secondary: #656d76;
  --border: #d0d7de;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-subtle: #dbeafe;
  --hero-bg: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 50%, #f5f0ff 100%);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
  --code-bg: #f0f4ff;
  --footer-bg: #f6f8fa;
}

[data-theme="dark"] {
  --bg: #0d1117;
  --bg-subtle: #161b22;
  --bg-card: #161b22;
  --text: #e6edf3;
  --text-secondary: #8b949e;
  --border: #30363d;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-subtle: #1c2d4a;
  --hero-bg: linear-gradient(135deg, #0d1117 0%, #111827 50%, #0f172a 100%);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.4), 0 4px 10px rgba(0, 0, 0, 0.3);
  --code-bg: #1c2333;
  --footer-bg: #010409;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ───────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
}

.logo-link:hover {
  color: var(--text);
}

.logo-img {
  border-radius: 4px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--text);
}

.theme-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.theme-btn:hover {
  color: var(--text);
  border-color: var(--text-secondary);
}

[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }

/* ── Hero ─────────────────────────────────────────────────── */

.hero {
  background: var(--hero-bg);
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--border);
}

.hero-content {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.accent {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-subtitle a {
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-install {
  display: inline-block;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 20px;
}

.hero-install code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
}

/* ── Showcase ─────────────────────────────────────────────── */

.showcase-section {
  padding: 56px 0 40px;
}

.showcase-header {
  max-width: 760px;
  margin: 0 auto 28px;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  align-items: stretch;
}

.code-window {
  border-radius: var(--radius);
  overflow: hidden;
  background: #0f172a;
  display: flex;
  flex-direction: column;
}

.code-sample-shell {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
}

.code-window-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(148, 163, 184, 0.12);
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.code-window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #64748b;
}

.code-window-title {
  margin-left: 6px;
  color: #cbd5e1;
  font-size: 13px;
  font-weight: 600;
}

.copy-code-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(96, 165, 250, 0.25);
  background: rgba(37, 99, 235, 0.16);
  color: #dbeafe;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.copy-code-btn svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.copy-code-btn:hover {
  background: rgba(37, 99, 235, 0.28);
  border-color: rgba(147, 197, 253, 0.65);
  transform: translateY(-1px);
}

.copy-code-btn:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
}

.code-window pre {
  margin: 0;
  padding: 16px 18px;
  overflow: auto;
  scrollbar-width: thin;
  flex: 1;
}

.code-window code {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  color: #e2e8f0;
  tab-size: 4;
}

.code-full {
  display: none;
}

.code-sample-shell.is-expanded .code-preview {
  display: none;
}

.code-sample-shell.is-expanded .code-full {
  display: block;
}

.code-sample-shell.is-collapsed::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 18px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0));
  pointer-events: none;
  z-index: 1;
}

.code-sample-shell.is-collapsed .code-sample-fade {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 74px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0), rgba(15, 23, 42, 0.95) 60%, rgba(15, 23, 42, 1));
  pointer-events: none;
  z-index: 1;
}

.expand-code-btn {
  position: absolute;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  z-index: 2;
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: rgba(15, 23, 42, 0.95);
  color: #e2e8f0;
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.expand-code-btn:hover {
  border-color: rgba(96, 165, 250, 0.55);
  color: #dbeafe;
}

.expand-code-btn:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
}

.code-sample-shell.is-expanded .code-sample-fade {
  display: none;
}

.code-sample-shell.is-expanded .expand-code-btn {
  position: static;
  display: block;
  width: fit-content;
  margin: 8px auto 14px;
  transform: none;
}

.token-keyword {
  color: #c084fc;
}

.token-comment {
  color: #94a3b8;
}

.token-type {
  color: #7dd3fc;
}

.token-string {
  color: #86efac;
}

.token-number {
  color: #fda4af;
}

.render-preview {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.render-art {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  flex: 1;
  align-items: center;
  padding: 12px;
  background: var(--bg-card);
}

.render-art-inner {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 16px;
  border-radius: calc(var(--radius) - 4px);
  overflow: hidden;
  background:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.14), transparent 38%),
    radial-gradient(circle at bottom right, rgba(139, 92, 246, 0.12), transparent 42%),
    var(--bg);
}

.render-art-inner svg {
  width: 100%;
  height: auto;
  display: block;
}

.showcase-callout {
  margin: 16px 0 0;
  padding: 14px 18px 14px 16px;
  color: var(--text-secondary);
  font-size: 13px;
  background: var(--bg-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
}

.showcase-callout code {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
}

/* ── Cards ────────────────────────────────────────────────── */

.cards-section,
.galleries-section {
  padding: 64px 0;
}

.section-alt {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-kicker {
  text-align: center;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-intro {
  max-width: 680px;
  margin: -24px auto 36px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 16px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.cards-grid-resources {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.cards-grid + .cards-grid {
  margin-top: 20px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
  color: var(--text);
}

.card:hover {
  box-shadow: var(--card-shadow-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  color: var(--text);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--accent);
  margin-bottom: 16px;
}

.gallery-card {
  position: relative;
  overflow: hidden;
}

.gallery-card-placeholder {
  background: var(--bg);
  border-style: dashed;
  cursor: default;
}

.gallery-card-placeholder:hover {
  box-shadow: var(--card-shadow);
  border-color: var(--border);
  transform: none;
  color: var(--text);
}

.gallery-card-featured {
  background:
    linear-gradient(135deg, var(--accent-subtle) 0%, transparent 65%),
    var(--bg-card);
}

.gallery-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.gallery-badge-muted {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.gallery-logo {
  border-radius: 6px;
  object-fit: contain;
}

.gallery-grid-small {
  margin-top: 16px;
  grid-template-columns: repeat(3, 1fr);
}

.platform-pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  list-style: none;
}

.platform-pill {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.platform-pill:hover {
  border-color: var(--accent);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.explore-pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  list-style: none;
  padding: 0;
}

.explore-pill {
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}

.explore-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.card-link {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.card:hover .card-link {
  color: var(--accent-hover);
}

/* ── Features ─────────────────────────────────────────────── */

.features-section {
  padding: 56px 0;
}

.section-title {
  font-size: 24px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature {
  padding: 24px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.feature:hover {
  border-color: var(--accent);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.feature h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Footer ───────────────────────────────────────────────── */

.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-inner p {
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text);
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 640px) {
  .hero {
    padding: 48px 0 40px;
  }

  .showcase-section,
  .galleries-section,
  .cards-section {
    padding: 40px 0;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid-small {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 900px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }

}

@media (min-width: 901px) {
  .gallery-card-featured {
    grid-column: span 2;
  }
}